Publications (17)
Observation of Anomalous Hall Effect in Bulk Single Crystals of n-type Cr-doped SbTe Magnetic Topological Insulator
Ali Sarikhani, Mathew Pollard, Jacob Cook +7
The exploration of topological Dirac surface states is significant in the realms of condensed matter physics and future technological innovations. Among the materials garnering att…
Classifying the provably total set functions of KP and KP(P)
Jacob Cook, Michael Rathjen
This article is concerned with classifying the provably total set-functions of Kripke-Platek set theory, KP, and Power Kripke-Platek set theory, KP(P), as well as proving several (…
Programmable phase selection between altermagnetic and non-centrosymmetric polymorphs of MnTe on InP via molecular beam epitaxy
An-Hsi Chen, Parul R. Raghuvanshi, Jacob Cook +19
Phase selecting nearly degenerate crystalline polymorphs during epitaxial growth can be challenging yet is critical to targeting physical properties for specific applications. Here…
Observation of Gapped Topological Surface States and Isolated Surface Resonances in PdTe Ultrathin Films
Jacob Cook, Sougata Mardanya, Qiangsheng Lu +7
The superconductor PdTe is known to host bulk Dirac bands and topological surface states. The coexistence of superconductivity and topological surface states makes PdTe a p…
Dirac Fermion Cloning, Moir Flat Bands and Magic Lattice Constants in Epitaxial Monolayer Graphene
Qiangsheng Lu, Ching-Kai Chiu, Congcong Le +10
Tuning interactions between Dirac states in graphene has attracted enormous interest because it can modify the electronic spectrum of the two-dimensional material, enhance electron…
Moiré Modulated Lattice Strain and Thickness-Dependent Lattice Expansion in Epitaxial Ultrathin Films of PdTe
Jacob Cook, Dorri Halbertal, Qiangsheng Lu +4
We report the epitaxial growth of PdTe ultrathin films on topological insulator BiSe. A prominent Moiré pattern was observed in STM measurements. The Moiré periodicit…
Multi-layered atomic relaxation in van der Waals heterostructures
Dorri Halbertal, Lennart Klebl, Valerie Hsieh +6
When two-dimensional van der Waals materials are stacked to build heterostructures, moiré patterns emerge from twisted interfaces or from mismatch in lattice constant of individua…
Thermodynamic constraints on the assembly and diversity of microbial ecosystems are different near to and far from equilibrium
Jacob Cook, Samraat Pawar, Robert G. Endres
Non-equilibrium thermodynamics has long been an area of substantial interest to ecologists because most fundamental biological processes, such as protein synthesis and respiration,…
Giant Topological Hall Effect in van der Waals Heterostructures of CrTe2/Bi2Te3
Xiaoqian Zhang, Siddhesh C. Ambhire, Qiangsheng Lu +11
Discoveries of interfacial topological Hall effect (THE) provide an ideal platform for exploring physics arising from the interplay between topology and magnetism. The interfacial…
Emergent Spin Fluctuation and Structural Metastability in Self-Intercalated CrTe Compounds
Clayton Conner, Ali Sarikhani, Theo Volz +13
Intercalated van der Waals (vdW) magnetic materials host unique magnetic properties due to the interplay of competing interlayer and intralayer exchange couplings, which depend on…
Observation of 2D Weyl Fermion States in Epitaxial Bismuthene
Qiangsheng Lu, P. V. Sreenivasa Reddy, Hoyeon Jeon +20
A two-dimensional (2D) Weyl semimetal featuring a spin-polarized linear band dispersion and a nodal Fermi surface is a new topological phase of matter. It is a solid-state realizat…
Ordinal analysis of intuitionistic power and exponentiation Kripke Platek set theory
Jacob Cook, Michael Rathjen
Until the 1970s, proof theoretic investigations were mainly concerned with theories of inductive definitions, subsystems of analysis and finite type systems. With the pioneering wo…
Observation of Symmetry-Protected Dirac States in Nonsymmorphic -Antimonene
Qiangsheng Lu, Kyle Y. Chen, Matthew Snyder +6
Two-dimensional (2D) Dirac states with linear band dispersion have attracted enormous interest since the discovery of graphene. However, to date, 2D Dirac semimetals are still very…
Thermodynamics of switching in multistable non-equilibrium systems
Jacob Cook, Robert G. Endres
Multistable non-equilibrium systems are abundant outcomes of nonlinear dynamics with feedback but still relatively little is known about what determines the stability of the steady…
Observation of Unpinned Two-Dimensional Dirac States in Antimony Single Layers with Phosphorene Structure
Qiangsheng Lu, Matthew Snyder, Kyle Y. Chen +10
The discovery of graphene has stimulated enormous interest in two-dimensional (2D) electron gas with linear band structure. 2D Dirac materials possess many intriguing physical prop…
Tunable High Spin Chern-Number Insulator Phases in Strained Sb Monolayer
Jacob Cook, Po-Yuan Yang, Theo Volz +8
High spin Chern-number insulators (HSCI) have emerged as a novel 2D topological phase of condensed matter that is beyond the classification of topological quantum chemistry. In thi…
Unconventional Josephson junctions with topological Kondo insulator weak links
Xuecheng Ye, Jacob Cook, Erik D. Huemiller +7
Proximity-induced superconductivity in three dimensional (3D) topological insulators forms a new quantum phase of matter and accommodates exotic quasiparticles such as Majorana bou…